9:15 AM - 9:30 AM [18a-Z05-2] Influence of steps in the surface on Contraction of Basal Plane Partial Dislocations in 4H-SiC 〇Atsuo Hirano1, Hiroki Sakakima1, Asuka Hatano1, Satoshi Izumi1 (1.Univ. of Tokyo)